Update steps to release versioned docs (#3897)

* Update steps to release versioned docs.

This makes versioned docs in consistent with Grafana.
More details:
https://github.com/grafana/website/pull/4970
https://github.com/grafana/website/pull/4970

Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>

* Add step to update `latest_version`

Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>

docs/sources/maintaining/release.md

@@ -104,9 +104,16 @@ Once the previous two steps are completed, you can publish your draft!
 
 Loki docs are versioned. Follow the below steps to version Loki docs for this release.
 
+>NOTE: Here $LOCAL_LOKI_PATH is your local path where Loki is checked out with correct $VERSION
+
 1. Clone Grafana website [repo](https://github.com/grafana/website)
-1. Create new branch `git checkout -b loki-v1.2.3` (replace `v1.2.3` with current release version)
-1. Run `make project-doc-release`
-1. It prompts for two things. `Project name` and `version`. Project name is `loki` and version is current release version.
+1. Create new branch `git checkout -b $VERSION` (replace `$VERSION` with current release version. e.g: `v2.2.1`)
+1. Run `mv content/docs/loki/next content/docs/loki/next.main`
+1. Run `mkdir content/docs/loki/next`
+1. Run `cp -R $LOCAL_LOKI_PATH/docs/sources/* content/docs/loki/next`
+1. Run `scripts/docs-release.sh loki latest next`
+1. Run `scripts/docs-release.sh loki $VERSION latest`
+1. Run `mv content/docs/loki/next.main content/docs/loki/next`
+1. Update `version_latest` to `$VERSION` in `content/docs/loki/_index.md`
 1. Docs will be generated for this release.
 1. Create PR and Merge it after approval.